模

The acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regards to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results.

先将结构的声辐射功率表示为一个正定的厄米特二次型，运用广义特徵值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度祸合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

The holotype and paratype specimens are deposited in the Bird Museum of Beijing Normal University .

该种的正模和副模标本存放于北京师范大学鸟类标本馆。

The holotype and paratype specimens are deposited in the Bird Museum of Beijing Normal University.

正模和副模标本存放于北京师范大学鸟类标本馆。

The characteristics to identify the new species are also given. The holotype and paratype specimens are deposited in the Bird Museum of Beijing Normal University.

该种的正模和副模标本存放于北京师范大学鸟类标本馆。

The dose distribution in homogeneous and heterogeneous phantoms for various fields and source-surface distances were calculated and compared with the measured results.

应用所建立的剂量算法对均匀水模体及肺、骨等层状非均匀模体中不同照射条件下的三维剂量分布进行计算，并将计算结果与测量结果进行比较。

Based on solution from tension equation for load carrying rope used in cable ways and cable cranes, present paper introduces a way of making homograph of tension of load carrying rope, as well as examples of its application.

承载索张力计算；诺模图；本文根据架空索道、缆索起重机承载索张力方程的解，介绍承载索张力计算诺模图的编制及其应用实例。

We generalize the concept of the set of variability defined in the unit diskby K.Strebel to general Riemann surfaces and prove that the set of variablity withrespect to the modulo homotopic class of a quasiconformal mapping between twoRiemann surfaces is a compact and connected subset.Consequently the num-ber of the extremal mappings in the modulo homotopic class of a quasiconformalmapping between two general Riemann surfaces is either one or infinity.

Strebel的定义在单位圆上的可变性集合的概念推广到一般Riemann曲面上去，并且证明了Riemann曲面之间的拟共形映射的模边同伦类所确定的可变性集合是一个连通的紧子集，从而得出一般Riemann曲面之间拟共形映射的模边同伦类中的极值映射要么唯一，要么有无穷多个。

The machining method of the horning wheels based on Gleason spiral bevel gear generators are studied in a deepgoing way, the corresponding algorithms to obtain the geometric parameters of both the workpiece and honing wheels, and the parameters of cutter head and machine setting for the machining of horning wheels are introduced in details.

为了解决大批量Gleason制螺旋锥齿轮制造中的热后精整问题，本文提出了将珩齿技术应用于螺旋锥齿轮的硬齿面加工中，并提出了珩磨轮的优化设计方法，研究了珩磨轮的特殊制造工艺中存在的拨模干涉检验、干涉修正及金属模的加工方法等问题。

Hurtle to cut a mold to chew a mold, wear away etc. various problem.

冲裁模的啃模，磨损等各种问题。

The purpose of the paper is to investigate the convergence of the mixed finite element method for the initial-boundary value problem for the Hyperbolic type integro-differential equation and Hyperbolic type equation.

本文讨论了双曲型和双曲型积分微分方程的标准混合有限元和H~1-Galerkin混合有限元方法的L~2模和H~1模的误差估计。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。